Manufacturing method of synthetic resin core material
AssigneesTokiwa Chemical Industries Co., Ltd., System Technical Co., Ltd.
InventorsNaohisa Miyakawa, Katsuhisa Kato
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Abstract
A method of manufacturing a synthetic resin core material having a substantially U-shaped cross section which is used in are extruded molding product for holding an opening portion of a vehicle body such as a door or a trunk of an automobile comprises the steps of extruding a synthetic resin to form a core material having a substantially U-shaped cross section, moving the U-shaped core material toward a cutting machine, rotating opposed rotors having blade-shaped portions in the cutting machine, and cutting and forming cut portions or cut slot portions on both lateral sides of the U-shaped core material.
Claims9
A manufacturing method of a synthetic resin core material comprising the steps of:
- extruding a synthetic resin by an extruder to form a core material having a substantially U-shaped cross section;
- advancing the U-shaped core material toward a cutting machine which includes opposed supports and rotors having blade-shaped portions disposed oppositely on the supports;
- rotating the rotors together with the blade-shaped portions with respect to the U-shaped core material traveling between the opposed supports;
- and cutting and forming opposed cut portions or cut slot portions in the U-shaped core material at fixed intervals.
Dependencies are inferred from the claim text.